Low noise vibrating string transducer

a transducer and low noise technology, applied in the field of transducers, can solve the problems of lacombe not revealing the shielding of the circuit or cable, the noise of the circuit must be eliminated by most amplifiers, and the noise is substantial and highly undesirable, so as to achieve a wide tonal range, reduce the noise contained, and reduce the effect of common mode rejection
US7105731B1Active Publication Date: 2006-09-12RIEDL JAMES L
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Patent Information

Authority / Receiving Office
US Β· United States
Current Assignee / Owner
RIEDL JAMES L
Publication Date
2006-09-12

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Abstract

An apparatus and method for amplifying low amplitude vibrations from stringed instruments, and in particular guitars while reducing Gaussian and 60 Hz hum noise from the signal. In particular, the invention incorporates the use of one or more bipolar magnets in conjunction with high precision differential amplifiers and a power source. The bipolar magnets may be arranged at varying locations on the guitar as long as they are within range to induce an electrical signal in the strings when they are played. The signal is then fed through the amplifier circuitry whereby noise is eliminated and then played through a standard speaker.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates generally to transducers. In particular, transducers for vibrating strings as those in guitars or other stringed instruments. The present invention enables high-quality amplification of low-amplitude vibrations that originate from metal stringed instruments through the use of one or more bipolar magnets in conjunction with high precision differential amplifiers and a power source.BACKGROUND OF THE INVENTION

[0002] In stringed instruments, amplification of low amplitude string vibrations is usually accomplished by utilizing an arrangement of wire-wound magnets under the strings of the instrument. To produce sound, the wire-wound magnets sense the vibrations of the strings electronically and a signal cable routes an electronic signal to an amplifier and speaker. The sensing occurs in a magnetic pickup mounted under the strings on the guitar's body. A bar magnet is typically used. When a vibrating string cuts through the field of ...

Claims

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